Perhaps you should try some spelling variations:
carbon acids » carboxyl acids, carbonic acid, carbon anodes
nco enabled » nano enabled, ict enabled, geo enabled
carbon aid » carbon air, carbon a, carbon a:c
two world » two worlds
world nco » world nano, world nick, world new
13.8 two » 1.8 two, 3.8 two, 2.8 two

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "13.8 two world nco enabled ((carbon aid) OR (carbon acids))*".